ZWC coordinates supplier selection and production follow-up. The requirements below are a buyer specification framework, not published performance results for a specific factory or product.
Make quotations technically comparable
| Control | Specify and record | Comparison trap |
|---|---|---|
| Hardness | Scale; specimen thickness; conditioning; test points; target and tolerance | Two identical numbers on different hardness scales are not equivalent. |
| Abrasion | Method; material density where relevant; loss and unit; test conditions | Mass loss and volume loss cannot be compared as if they were the same measurement. |
| Flexing | Shoe or component; cycles; angle/conditions; opening and crack criteria | Component testing does not automatically predict whole-shoe performance. |
| Adhesion | Location; force per width where applicable; dry/wet/aged condition; failure mode | A strong average may hide a weak location; agree individual acceptance rules. |
| Fit and size | Last reference; size chart; points of measurement; tolerances | A matching label is not proof of matching fit. |
Separate family background from the nominated factory
ZWC’s published family footwear-sole manufacturing background dates to 1988. That context does not certify a nominated factory, guarantee a specific outsole performance or establish the available capacity for an order. Identify the factory and process that will actually produce your style.
Compare the result before comparing the claim
A hypothetical quotation saying “hardness 60” is incomplete: the scale, tolerance and method are missing. Ask both suppliers to quote against the same controlled requirement. If they propose different compounds, compare the trade-off explicitly rather than treating the material names as interchangeable.
Bind the report to production
Record the shoe style, compound, color, construction revision, sample source and test date. A new adhesive, upper finish or sole treatment can change bond performance. Specify which changes require retesting and who may approve a deviation before bulk production.
Place the checks in the production sequence
Before ordering, agree the material and construction. Before bulk release, approve the sample and test plan. During production, confirm the nominated materials and process. Before shipment, reconcile inspection findings, corrective actions and release authority. A report from development is only one part of this chain.
Evidence to request with the quotation
Request the specification revision, supplier and production site, quantity by style/color, report identifiers and tested materials, unit price and exclusions, sample milestones, available production slot, packing details and named shipment point. Mark each item as requested, received or checked. A supplier statement alone should not become a verified entry in the comparison matrix.
Supplier questions and answers
What shoe-sole hardness and abrasion results should I request?
Specify the sole compound and intended use before selecting a hardness range. A Shore A value is not interchangeable with Shore C or another scale. Record method, specimen conditioning, thickness, measurement locations, target and tolerance. For abrasion, request the reported loss and unit under the agreed method. ZWC does not claim a universal passing result across suppliers.
How are footwear flexing and sole adhesion compared?
Compare the same construction, conditioning and method. A useful report records flexing cycles, crack or opening criteria, sole adhesion force per width where applicable, specimen location and failure mode. Dry, wet and aged results are separate conditions. Agree the acceptance limits with the buyer and laboratory before testing; do not transfer a result from a different material or shoe style.
What is the MOQ per style, color and size?
MOQ is confirmed against the product specification and supplier route. Ask for separate minimums by style, color, material batch and size assortment, plus repeat-order conditions. Existing materials or tooling may reduce minimums, but no universal low-MOQ quantity is promised. Record any surcharge alongside the reduced order quantity.
What are the sample lead time and on-time delivery rate?
Sampling and bulk timing are quoted after material, tooling and approval requirements are defined. ZWC does not publish a verified six-month on-time delivery rate on this page. Compare suppliers using orders due in the same period and the same milestone, including overdue open orders. Preserve the original agreed date instead of hiding delays through revised dates.
Read all 15 ZWC supplier-selection answers
Decision parameters
Use these fields in your sourcing brief. Company figures were supplied by ZWC on 24 September 2026. Technical and commercial fields must be fixed for your order; company totals are not product test results or supplier commitments.
- Sourcing experience
- 3 years
- Customer countries
- 60 across ZWC’s business; not a per-category count
- Annual export volume
- 3 million pairs of shoes per year; company-reported, not available production capacity
- Product specification
- Construction, upper, lining, sole compound, last and size run
- Parameter range
- Hardness scale/range; abrasion loss; flex cycles; adhesion force; size tolerances; numeric limits agreed in the buyer-approved specification.
- Certification / report number
- No universal number published. Verify the actual issuer, holder, number, scope and date per nominated product.
- Available capacity
- Confirmed per supplier, style and production window; record units/month and current committed load.
- MOQ
- Confirm by style, color, material batch and assortment; no universal minimum.
- Lead time
- Sample and bulk days quoted separately, starting from agreed approvals, material readiness and payment milestones.
- Packaging
- Confirm unit pack, labels, carton dimensions, quantity/carton, gross weight and any pallet requirements.
- Port / delivery term
- Named loading port or handover place and trade term to be agreed in the quotation; destination confirmed by buyer.
Prepared with AI assistance using ZWC's published service scope. No supplier performance figures, customer cases or test outcomes have been invented. Product-specific acceptance limits require buyer and supplier agreement.
